Engberg Company installs lawn sod in home yards. The company's most recent monthly contribution format income statement follows: Percent of Sales 100% 40% 60% Amount $ 128,000 51,200 76,800 21,000 $ 55,800 Sales Variable expenses Contribution margin Fixed expenses Net operating income Required: 1. What is the company's degree of operating leverage? 2. Using the degree of operating leverage, estimate the impact on net operating income of a 20% increase in unit sales. 3. Construct a new contribution format income statement for the company assuming a 20% increase in unit sales. Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 What is the company's degree of operating leverage? (Round your answer to 2 decimal places.) Degree of operating leverage Required 1 Required 2 Required 3 Using the degree of operating leverage, estimate the impact on net operating income of a 20% increase in unit sales. (F your intermediate calculations to 2 decimal places. Round your percentage answer to 2 decimal places (i.e .1234 should entered as 12.34).) Net operating income by % Required 1 Required 2 Required 3 Construct a new contribution format income statement for the company assuming a 20% increase in unit sales. Engberg Company Contribution Income Statement Amount Percent of Sales % % %